Mob Battle Plus

Added advanced pathfinding mode, typically useful for "castle siege" scenarios:

• Is applied to mobs in certain configurable teams (by default "attackers", "raid", "raiders") if advancedMobPathfinding gamerule is true
• The "strength" of this pathinding is configurable, simply ranging from 1 to 5. 1 is slightly better than vanilla while 5 can make a mob pathfind from first to third floor of the woodland mansion (tested on zombies).
• Added siege destination setter. Allows to set a point where attacking team will go when not fighting anything. Also depends on pathfinding strength and requires advancedMobPathfinding.

New gamerules:

• advancedMobPathfinding
• allowHostileMobNaturalDespawn

New camera position: Moving tracking. Turns the player into a camera with perfect tracking of the targeted mob.